Discussion
Which taper is used on spindle nose of lathe head stock
Answer: B
The spindle nose of a lathe headstock uses a Morse taper.
The bore of the headstock spindle, like the tailstock barrel, is ground to a standard Morse taper, a self-holding taper of roughly 1 in 20 on the diameter. Live centres, drill chucks and other tooling with a matching Morse shank are held by friction in it and are easily knocked out.
A taper pin uses a 1 in 50 taper for locating and fastening parts, not for spindle bores. The Brown and Sharpe taper is used mainly on milling and grinding machine spindles. 'Pitch taper' is not a standard taper.
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